Rust-Oleum Stops Rust Universal Bonding Primer firmly bonds topcoats to any difficult-to-paint surface with maximum adhesion and superior durability. Perfect color is within reach with a quality base layer on your project. For the ultimate finish, apply to galvanized metal, wrought iron railings, furniture, aluminum flashings, PVC, porcelain, masonry, glazed brick, metal, wood, fiberglass and more.